Home / 115,629.47-159,548.27-64,625.90

Finding the Fourth Proportional to 115,629.47, 159,548.27 and 64,625.90

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Solution

The fourth proportional to 115,629.47, 159,548.27 and 64,625.90 is: 89,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,629.47 : 159,548.27 = 64,625.90 : x
  2. Step 2: Convert to fraction form
    115,629.47/159,548.27 = 64,625.90/x
  3. Step 3: Cross multiply
    115,629.47x = 159,548.27 × 64,625.90
  4. Step 4: Simplify right side
    115,629.47x = 10,310,949,421.32
  5. Step 5: Solve for x
    x = 10,310,949,421.32/115,629.47
  6. Step 6: Final answer
    x = 89,172.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.